<!DOCTYPE html>
<html lang="en">

<head>
  <meta charset="UTF-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Document</title>
  <script src="https://cdn.jsdelivr.net/npm/vue@2.6.10/dist/vue.js"></script>
</head>

<body>
  <div id="app">
    <button @click="type=1">新闻</button>
    <button @click="type=2">音乐</button>
    <button @click="type=3">娱乐</button>
    <div v-show="type===1">
      <h2>新闻。。。。</h2>
      <input type="text">
    </div>
    <div v-show="type===2">
      <h2>音乐...</h2>
      <input type="text">
    </div>
    <div v-show="type===3">
      <h2>娱乐...</h2>
      <input type="text">
    </div>
  </div>
  <script>
    Vue.config.productionTip = false;

    const vm = new Vue({
      el: "#app",
      data() {
        return {
          type: 1
        }
      }
    })
  </script>
</body>

</html>